The effects of imaging view and sample volume location on tricuspid flow and of aging and heart rate on tricuspid and mitral flow were evaluated in 35 normal subjects (aged 18 to 77 years). Pulsed Doppler recordings were obtained in the parasternal short-axis, right ventricular inflow and apical 4-chamber views at the level of the tricuspid and mitral annulus and 1 cm caudad and 1 cm cephalad to the tricuspid annulus in the apical 4-chamber view. Right and left ventricular filling velocities were related (E velocity: r = 0.46, p <0.01; A velocity: r = 0.39, p <0.05; E/A ratio: r = 0.56, p <0.001), but early and late mitral velocities were significantly higher than the corresponding right velocity, although E/A ratio did not differ. The right ventricular filling pattern was not affected by imaging view; however, placement of the sample volume 1 cm cephalad resulted in average 17.39% (p <0.001) reduction in E velocity. Relation between age and tricuspid E velocity was significant (r = -0.37, p <0.05) but weaker than that between age and mitral variables (r = -0.64, p <0.001). The correlation was similarly weak between age and both tricuspid (r = 0.35, p <0.05) and mitral A velocity (r = 0.39, p <0.05). E/A ratio was strongly inversely related to age, both for tricuspid (r = -0.63, p <0.001) and mitral (r = -0.70, p <0.001) velocity. There was no significant relation between any tricuspid inflow parameters and heart rate; in contrast, mitral A velocity (r = 0.40, p <0.05) and E/A ratio (r = -0.44, p <0.01) were modestly related to heart rate.
|Translated title of the contribution||Effects of imaging view, age, heart rate and sample volume location on tricuspid flow in normal subjects|
|Number of pages||5|
|Publication status||Published - 1994|
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
- Radiology Nuclear Medicine and imaging